avian digestion

The Avian Digestive System By Gemma Dalena

Overview of Information Presented:

The Avian Digestive System Parts of the Avian Digestive System Esophagus Stomach Small Intestine Large Intestinehttp://www.calaged.org/ResourceFiles/Curriculum/advcluster/3000.htm

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Information Guide

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Under the California Agriculture Core Curriculum Animal Science

Animal Physiology –(CLF3201) The Digestive Process



The Avian Digestive System

This digestive system is adapted for grinding hard or encased (shells of seeds) food.


Parts of the Avian Digestive System

The Mouth Saliva is secreted

to moisten food and aid in swallowing since avian species do not have teeth.


The Esophagus The Esophagus connects the mouth to the stomach.

Esophagus


The Esophagus has a modification which is called the "crop" where

food is stored and further moistened

Crop


The Avian Stomach

Consists of Two Parts:


The Avian Stomach Consists of two parts. 1.The "proventriculus" which provides digestive secretions.

Proventriculus


The Avian Stomach2. The "gizzard" which is located after the proventriculus, it is very muscular and is used for grinding food. Gizzard


The Small Intestine The small intestine varies in length depending on the diet. It is

longer in herbivores (plant eating birds) and shorter in carnivores (flesh eating birds).

Parts of the small intestine

Part of the small intestine


The Small Intestine The functions of the small intestine

are similar to the small intestine of ruminants and monogastrics


The Large Intestine

The functions of the large intestine are similar to the small intestine of ruminants and monogastrics.


The Large Intestine

Ruminants


The Large Intestine

Monogastrics


The Large Intestine The "cloaca" which, is located at the terminal end of the large

intestine is a chamber into which the urinary and genital canals open.

cloaca

Large Intestine


The Large Intestine

At the junction of the small and large intestine is where the two "ceca" pouches are located.


The Large Intestine The two ceca pouches further contribute to aiding in fiber

digestion and absorption.

Ceca PouchCeca Pouch


avian digestion

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